Error 1418 Mysql
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Mysql Function Deterministic
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wish to improve their database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers https://dev.mysql.com/doc/refman/5.7/en/stored-programs-logging.html are voted up and rise to the top Use of log_bin_trust_function_creators in MySQL up vote 0 down vote favorite What is the use of log_bin_trust_function_creators? Also, Is the value of the parameter dynamic? Will it change if I restart my MySQL service? mysql mysql-5.5 share|improve this question edited Jul 28 '15 at 13:08 Hector 826215 asked Jul 28 '15 at 11:47 tesla747 643526 add a comment| 1 Answer 1 active oldest votes up vote http://dba.stackexchange.com/questions/108316/use-of-log-bin-trust-function-creators-in-mysql 1 down vote accepted This variable controls whether binary logging should trust the stored function creators for not to create stored functions that will cause unsafe events. Eg. having UUID functions. This has been explained well in documentation: When you create a stored function, you must declare either that it is deterministic or that it does not modify data. Otherwise, it may be unsafe for data recovery or replication. By default, for a CREATE FUNCTION statement to be accepted, at least one of DETERMINISTIC, NO SQL, or READS SQL DATA must be specified explicitly. Otherwise an error occurs: ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable) To relax the preceding conditions on function creation (that you must have the SUPER privilege and that a function must be declared deterministic or to not modify data), set the global log_bin_trust_function_creators system variable to 1. Reference: mysql-documentation (read this as it explains with example.) About your second question, if it's dynamic and will it change if you restart server: Yes it is a dynamic variable. The variable will change upon restart, if you do not update the config to reflect the change. Reference: mysql-documentation-again share|improve this answ
and Logo DesignPortfolioBlogContact DETERMINISTIC, NO SQL, or READS SQL DATA in its declarationHome » Blog » DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration Written by Aldwin Galapon posted on Sunday, November 11th, 2012 Read Comments http://www.jamediasolutions.com/blog/deterministic-no-sql-or-reads-sql-data-in-its-declaration.html (4)Recommended ( 0 )Print this PageEmail this Page 4.40 avg. rating (87% score) - 5 votes I experienced this error while trying to alter one of my stored procedures remotely on a https://www.pythian.com/blog/non-deterministic-functions-and-the-binary-log/ master server. After some research, I ended up getting information from "Binary Logging of Stored Programs".From MySQL Reference in verbatim: When you create a stored function, you must declare either that it mysql error is deterministic or that it does not modify data. Otherwise, it may be unsafe for data recovery or replication.By default, for a CREATE FUNCTION statement to be accepted, at least one of DETERMINISTIC, NO SQL, or READS SQL DATA must be specified explicitly. Otherwise an error occurs:ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and error 1418 mysql binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)Further reading helped me arrive to the conclusion to the cause of this error:Cause: The error arises if the binary logging option, which is required for the replication, is turned on for the MySQL server.We can choose solutions listed below depending to our system requirements, for me, I opted on using the later.When creating or altering a stored function, you must declare either that it is deterministic or that it does not modify data. Otherwise, it may be unsafe for data recovery or replication.To relax the preceding conditions on function creation (that you must have the SUPER privilege and that a function must be declared deterministic or to not modify data), set the global log_bin_trust_function_creators system variable to 1. By default, this variable has a value of 0, but you can change it like this:mysql> SET GLOBAL log_bin_trust_function_creators = 1;You can also set this variable by using the -log-bin-trust-function-creators=1 option when starting the server. MySQL Open Source Software Development Posted on Sunday, November 11th, 2012 at 11:54 pm Print this Article Email this Article AlexThanks. It's help for me
ITProfessional ServicesIT Strategy + Consulting ServicesImplementation ServicesManaged ServicesTechnology PracticesAdvanced AnalyticsBig DataCloudDatabasesDevOpsInfrastructure ManagementTechnologiesAmazon Web ServicesMicrosoft AzureGoogle Cloud PlatformCassandraHadoopMySQLOracleOracle EBSMicrosoft SQL ServerResourcesOverviewWhite PaperseBooksWebinarsData SheetsArticlesPresentationsVideosClientsAboutLeadership TeamExpertsCareersSocial ResponsibilityPythia IndexNews & EventsWorldwide OfficesContactBlog CONTACT US Your source for technical trends, tips, and best practices from Pythian experts Subscribe // non-idevice version of form ?> // idevice version of form ?> Privacy Policy Business Insights Technical Track Pythian Life Non-deterministic Functions and the Binary Log by Laine CampbellNovember 11, 2011 Posted in: Technical Track Tags: MySQL I wrote this post because I ran across this issue when debugging why tables with triggers/functions that were not getting replicated to slaves. The problem appears when binlog_format is set up as STATEMENT. You can check the ‘change log’ checking the following link for more information about default values [1].If you have non-deterministic functions [2] that insert or modify your data with dynamic SQL like this : DELIMITER $$ CREATE FUNCTION `insert_dynamic_data` (in_param VARCHAR(30)) RETURNS bigint(20) BEGIN …. INSERT INTO `table_to_ins` (param) VALUES(in_param); … /* You can also add here @@warning_count or row_count() check and return -1 to catch errors*/ return LAST_INSERT_ID(); END $$
The problem starts when you plan to user “replication” through binary logs events. In that cases, you must consider:"If a stored program that modifies data is nondeterministic, it is not repeatable. This can result in different data on a master and slave, or cause restored data to differ from the original data." [3]When you create a function, by default is NOT DETERMINISTIC, which means that for each execution could the code will be executed again. In the other hand, DETERMINISTIC will check if the paramet